Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751501AbYJSLRV (ORCPT ); Sun, 19 Oct 2008 07:17:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750911AbYJSLRN (ORCPT ); Sun, 19 Oct 2008 07:17:13 -0400 Received: from mail.bencastricum.nl ([213.84.203.196]:46588 "EHLO bencastricum.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750928AbYJSLRM (ORCPT ); Sun, 19 Oct 2008 07:17:12 -0400 X-Greylist: delayed 883 seconds by postgrey-1.27 at vger.kernel.org; Sun, 19 Oct 2008 07:17:11 EDT Message-ID: <6F31A6373E3D42EDAED26A994BA0830D@Seven> From: "Ben Castricum" To: Subject: NULL pointer derefence since 2.6.27 in (e)poll Date: Sun, 19 Oct 2008 13:02:20 +0200 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5512 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2296 Lines: 53 I am getting this bug reports almost daily since about 2.6.27. I saved the output of all of them, but they are all nearly identical, so I just included the first one. After the report networking seems unstable and the system requires a reboot. My .config can be found at http://www.bencastricum.nl/.config I hope this helps. Ben BUG: unable to handle kernel NULL pointer dereference at 00000020 IP: [] sock_poll+0xc/0x12 *pde = 00000000 Oops: 0000 [#1] SMP last sysfs file: /sys/devices/pci0000:00/0000:00:1f.3/i2c-adapter/i2c-0/0-002e/cpu0_vid Modules linked in: ipt_MASQUERADE ipt_REJECT ipt_LOG xt_recent xt_tcpudp xt_state iptable_filter nf_conntrack_ftp iptable_nat ip_tables nf_nat x_tables nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 af_packet usb_storage usbhid 8139too mii tg3 libphy cdc_acm ehci_hcd uhci_hcd usbcore lm85 hwmon_vid i2c_i801 softdog rtc ext2 [last unloaded: firmware_class] Pid: 1717, comm: squid Not tainted (2.6.27-05178-g2e532d6 #111) HP d530 SFF(PL110ES) EIP: 0060:[] EFLAGS: 00010246 CPU: 0 EIP is at sock_poll+0xc/0x12 EAX: ea872d80 EBX: 00000000 ECX: 00000000 EDX: eee50e00 ESI: e9a9bf00 EDI: ef304b80 EBP: ea84af44 ESP: ea84af40 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 Process squid (pid: 1717, ti=ea84a000 task=ea96e330 task.ti=ea84a000) Stack: e9a9bf0c ea84afb0 b017ff04 ea84af9c 00000002 00000000 eabe1300 ef304b98 00000003 ef304bac ef304ba4 e9a9bf0c ef304ba0 ef304b94 00000046 ef304b84 ea84af9c b03ce000 b014248d ea84af94 b0126765 ea84afb0 b0105909 ea84af9c Call Trace: [] ? sys_epoll_wait+0x245/0x3a7 [] ? handle_fasteoi_irq+0x0/0xad [] ? irq_exit+0x53/0x77 [] ? do_IRQ+0xae/0xc4 [] ? sysenter_do_call+0x12/0x25 Code: 8b 58 54 b8 ea ff ff ff 85 db 74 0c ff 75 0c ff 75 08 89 f0 ff d3 5a 59 8d 65 f8 5b 5e 5d c3 55 89 e5 53 89 d1 8b 50 6c 8b 5a 0c 53 20 5b 5d c3 55 89 e5 53 89 d1 8b 50 6c 8b 5a 0c ff 53 4c EIP: [] sock_poll+0xc/0x12 SS:ESP 0068:ea84af40 ---[ end trace 6e50fb78d788d751 ]--- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/